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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Way to know everything is alright with the breeding male






2. 1-2 days






3. 4-6 days






4. Milk is 15% ________ and 85% __________.






5. Front feet and head first. (except for hogs and dogs)






6. 45-60 days after breeding; re-breed as required






7. Days which have increasing daylight hours

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8. 24 hours before end of estrus cycle






9. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






10. 114 days






11. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






12. Can survive ~7 days in cow. vast majority <48 hours






13. 283 days






14. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






15. Contains and regulates the temp of the testes for sperm production






16. Important 'landmark' during palpation






17. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






18. What about the sperm for a bull which has been castrated but still has testicles?






19. Sperm production






20. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






21. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






23. Parturition is controlled by...






24. 19-23 (21) days






25. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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26. ~305 days (altough often longer due to breeding difficulties)






27. When are dairy cattle dehorned?






28. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






29. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






30. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






31. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






32. 1-3 days






33. What helps regulate spermatogenesis?






34. (LH) causes female's egg to break (her period)






35. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






36. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






37. Implies the amount of estrogen production






38. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






39. Depository for semen during insemination. where urine leaves the body






40. FEED






41. Allows extension of penis without fibro-elastic penis






42. Microscopic - make sure not sterile - very few bulls are actually tested






43. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






44. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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45. Larger the cow - more milk is produced; smaller the cow - less milk is produced






46. 265-285 days






47. Depository for semen during insemination. where urine leaves the body






48. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






49. Duct through penis that carries sperm and urine






50. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)